A biological information monitor includes: a displaying section on which a biological information display screen is displayed, the biological information display screen including a first display region on which a trend graph of first biological information is displayed and a second display region on which a histogram of second biological information is displayed and a display controlling section which is configured to control contents displayed on the biological information display screen, and which is configured to cause the trend graph for a plurality of days and the histogram for the plurality of days to be simultaneously displayed in the first display region and the second display region, respectively.
